Giant Impact Scenario May Explain the Unusual Moons. Among the oddities of the outer solar system are the middle-sized moons of Saturn, a half-dozen icy bodies dwarfed by Saturn's massive moon Titan. According to a new model for the origin of the Saturn system, these middle-sized moons were spawned during giant impacts in which several major satellites merged to form Titan.
Abundant evidence for flowing liquids is seen in this view of Saturn’s moon Titan, from sinuous, wide river channels to shorter, more chaotic drainage patterns. This radar view of Titan's south pole was taken on Dec.
Details of Saturn's icy rings are visible in this sweeping view from Cassini of the planet's glorious ring system. The total span, from A ring to F ring, covers approximately miles km) and was photographed at Nov.